I think I have been scammed by people claiming to...

I think I have been scammed by people claiming to belong to an international company. I carried out a freelance job for them and then in order to get the payment for that job, they told me I had to pay for several things such as tax and what not in order to receive the money internationally. The thing is when I used to pay them I would send the money through vendors located in Qatar. I was wondering if I could atleast file a case against the vendors to get my money back?